Spontaneous exchange bias: Unidirectional anisotropy in an otherwise isotropic system

Jyotirmoy Saha, Randall H Victora

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44 Scopus citations

Abstract

We propose a mechanism that is capable of inducing a unidirectional anisotropy in an otherwise isotropic ferromagnet-antiferromagnet system just by the mere application of the first field point in the hysteresis loop evaluation. The connection between this mechanism and the nonzero exchange bias obtained in a hard-axis hysteresis loop is also discussed. The system of Ni80 Fe20 Ni50 Mn50 has been simulated using a large-scale micromagnetic model to illustrate this effect.

Original languageEnglish (US)
Article number100405
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number10
DOIs
StatePublished - Sep 17 2007

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